Land‐use comparison of depression‐focussed groundwater recharge in the Canadian prairies

The irregularity in monsoon has severely affected the water availability at surface and sub-surface systems. Diminishing surface and sub-surface availability has not only decreased the water availability, but it additionally affected the ecosystem and increased disastrous situations like floods and droughts, resulting problems of stress on groundwater recharge. Groundwater recharge is a technique by which infiltrated water passes through the unsaturated region of groundwater and joins the water table. It is based upon soil type, land use land cover, geomorphology, geophysical and climate (viz. rainfall, temperature, humidity etc.) characteristics of a region. Over the years, due to variations in weather pattern and overexploitation of aquifers groundwater recharge has decreased and groundwater level has reduced in the most parts of the country. This has led to severe water deficit problems in several parts of the country. This can be solved by different direct and indirect methods of groundwater recharge technology. This technology can reduce the wastage of water and enhance groundwater availability for uses in different sector like irrigation, domestic and industrial uses.

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High-resolution Data Based Groundwater Recharge Estimations of Aynalem Well Field

Momona Ethiopian Journal of Science ◽

10.4314/mejs.v13i1.1 ◽

2021 ◽

Vol 13 (1) ◽

pp. 1-20

Author(s):

Abdelwassie Hussien ◽

Tesfamichael Gebreyohannes ◽

Miruts Hagos ◽

Gebremedhin Berhane ◽

Kassa Amare ◽

...

Keyword(s):

Land Use ◽

High Resolution ◽

Water Balance ◽

Groundwater Recharge ◽

Groundwater Level ◽

Weighted Average ◽

Level Fluctuation ◽

Average Value ◽

Well Field ◽

Groundwater Level Fluctuation

Due to the ever-increasing demand for water in Aynalem catchment and its surrounding, there has been an increased pressure on the Aynalem well field putting the sustainability of water supply from the aquifer under continuous threat. Thus, it is vital to understand the water balance of the catchment to ensure sustainable utilization of the groundwater resource. This in turn requires proper quantification of the components of water balance among which recharge estimation is the most important. This paper estimates the groundwater recharge of the Aynalem catchment using high-resolution hydro-meteorological data. Daily precipitation and temperature measurement data for years 2001-2018; groundwater level fluctuation records collected at every 30 minutes; and soil and land use maps were used to make recharge estimations. In the groundwater level fluctuation, three boreholes were monitored, but only two were utilized for the analysis because the third was under operation and does not represent the natural hydrologic condition. Thornthwaite soil moisture balance and groundwater level fluctuation methods were applied to determine the groundwater recharge of the Aynalem catchment. Accordingly, the annual rate of groundwater recharge estimated based on the soil-water balance ranges between 7mm/year and 138.5 mm/year with the weighted average value of 89.04 mm/year. The weighted average value is considered to represent the catchment value because the diverse soil and land use/cover types respond differently to allow the precipitation to recharge the groundwater. On the other hand, the groundwater recharge estimated using the groundwater level fluctuation method showed yearly groundwater recharge of 91 to 93 mm/year. The similarity in the groundwater recharge result obtained from both methods strengthens the acceptability of the estimate. It also points out that the previously reported estimate is much lower (36 to 66 mm/year).

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Supplementary material to "Effects of midwinter snowmelt on runoff generation and groundwater recharge in the Canadian prairies"

10.5194/hess-2018-423-supplement ◽

2018 ◽

Author(s):

Igor Pavlovskii ◽

Masaki Hayashi ◽

Daniel Itenfisu

Keyword(s):

Groundwater Recharge ◽

Runoff Generation ◽

Canadian Prairies ◽

Supplementary Material

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Spatial Analysis to Determine Groundwater Recharge Area in Purworejo Regency, Central Java Province/Indonesia

E3S Web of Conferences ◽

10.1051/e3sconf/20187303025 ◽

2018 ◽

Vol 73 ◽

pp. 03025 ◽

Cited By ~ 1

Author(s):

Thomas Triadi Putranto ◽

Daniel Eko Aryanto

Keyword(s):

Land Use ◽

Spatial Analysis ◽

Groundwater Recharge ◽

Protected Area ◽

Analysis Tool ◽

Recharge Area ◽

Rock Permeability ◽

Central Java ◽

The Impact

The impact of land use change will lead to a reduction of the land that is supposed to be for the groundwater recharge area. The area which is previously as a protected area, becoming a cultivated area. Determination of groundwater recharge areas is needed to ensure the availability of groundwater in Purworejo regency. The objective of this study is at determining the suitability of land use for groundwater recharge areas. The method was developed by using spatial analysis tool based on rating and weighting value of some parameters, i.e. rock permeability, rainfall, land use, soil type, slope, and depth of groundwater depth. Results conduct that the groundwater recharge area covers around 42,192 ha. Most of the groundwater recharge areas are located in the protected area, but there are several occupied by cultivated areas.

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